couldn't maintain its positive momlltum, even though factory orders had their biggest monthly increa m in september in a year and a half.cr the s&p 500 sank into the close, ending down 0.9% trading volume on the big board totaled 791 millioshares.sh it was 1.8 billion on the nasdaq. the pressure can from the materials sector, down two percent. energy falling 1.7%. and technology down 1.5%5% falling commodity prices weighed on some of their respective stock sectors. oil fell more than two dollars per barrel, settling at its lowest price since june. the u.s. dollar was higher on the back of the emoyment numbers and a more expensive dollar can put downward presre on oil. esl giant chevron also hurt the energy sector and the dow. chevron had the biggesten percentage loss among dow stocks. chevron did not make as much money has anticipated in the third quarter. earnings per share were well short of eimates. similar to exxoimmobil, chevron also saw its production an cfuel sales fall, hit by hurricane isaac in august, legal troubles in brazil and a refinery fire in california. shares fell 2.8